in recent years the crime in the world is increased and as well as security too.
people tend to ask for ransom via through wire transfer in a classic way.
but as time changes people become smarter, corruption grows.. then comes anonymous ways to store corrupted money.!!!! cryptocurrency!!!
 no need of freezing accounts by government officials on any one, not even terrorists.

good news bitcoin has a brighter future...better to get bitcoin by earning or investing.